<template>
  <div>
    <!--面包屑导航区-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      ></el-alert>
      <!--步骤条-->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        class="demo-ruleForm"
        label-position="top"
      >
        <!--tabs栏-->
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                class="el-cascader-menu"
                expand-Trigger="hover"
                :options="catelist"
                :props="cateProps"
                v-model="addForm.goods_cat"
                @change="handleChange"
              >
              </el-cascader>
            </el-form-item>
          </el-tab-pane>

          <el-tab-pane label="商品参数" name="1">
            <!--选然表单item项-->
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTableData"
              :key="item.attr_id"
            >
              <!--复选框组-->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                  border
                >
                </el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>

          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTableDate"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>

          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture" :headers="headerObj" :on-success="handleSuccess">
              <el-button  size="small" type="primary">
                  点击上传
            </el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!--富文本编辑器-->
            <quill-editor v-model="addForm.goods_introduce">
            </quill-editor>
          <!--添加按钮-->
          <el-button type="primary" class="btnAdd" @click="add">添加按钮</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
        <!--图片预览-->
    <el-dialog
  title="图片预览"
  :visible.sync="previewVisible"
  width="50%">
  <img :src="previewPath" alt="" class="previewImg">
</el-dialog>
    
  </div>
</template>
<script>
import _ from  'lodash'
export default {
  data() {
    return {
      activeIndex: "0",
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        //商品所属的数组
        goods_cat: [],
         //图片数组
         pics:[],
         //商品详情
         goods_introduce:'',
         attrs:[]
      },
     
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选商品分类", trigger: "blur" },
        ],
      },
      catelist: [],
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      //动态参数列表数据
      manyTableData: [],
      //静态属性列表数据
      onlyTableDate: [],
      uploadURL:'http://127.0.0.1:8888/api/private/v1/upload',
      //图片上传组件headers请求头对象
      headerObj:{
          Authorization:window.sessionStorage.getItem('token')
      },
      previewPath:'',
      previewVisible:false
    };
  },
  created() {
    this.getCateList();
  },

  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) {
        return this.$message.error("获取数据失败");
      }
      this.catelist = res.data;
      console.log(this.catelist);
    },
    //级联变化触发函数
    handleChange() {
      console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
      }
    },
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.error("先选择分类");
        return false;
      }
    },
    async tabClicked() {
      if (this.activeIndex === "1") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: "many",
            },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取动态参数列表失败");
        }
        console.log(res.data);
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyTableData = res.data;
      } else if (this.activeIndex === "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: {
              sel: "only",
            },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.error("获取静态属性列表失败");
        }
        console.log(res.data);
        this.onlyTableDate = res.data;
      }
    },
    //处理图片预览效果
    handlePreview(file){
       this.previewPath=file.response.data.url
       this.previewVisible=true
    },
    //处理移除图片的操作
    handleRemove(file){
         //1.获取将要删除的图片的临时路径
         const filePath=file.response.data.tmp_path
         //2.从pics数组中，找到这个图片对应的索引值
         const i=this.addForm.pics.findIndex(x=>x.pic===filePath)
         //3.调用数组的splice方法，把图片信息对象，从pics数组中移除
         this.addForm.pics.splice(i,1)
         console.log(this.addForm)
    },
    //监听图片上传成功的事件
    handleSuccess(response){
        console.log(response)
        //1.拼接得到一个图片信息对象
        const picInfo={pic:response.data.tmp_path}
        //2.将信息对象push到pics数组中
        this.addForm.pics.push(picInfo)
        console.log(this.addForm)
    },
     add(){
      // console.log(this.addForm)
      this.$refs.addFormRef.validate(async valid=>{
        if(!valid){
          return this.$message.error('请填写必要的表单项')
        }
        //执行添加业务罗i及
       const form= _.cloneDeep(this.addForm)
        form.goods_cat=form.goods_cat.join(',')
        //处理动态参数
        this.manyTableData.forEach(item=>{
          const newInfo={attr_id:item.attr_id,
          attr_value:item.attr_vals.join(' ')}
          this.addForm.attrs.push(newInfo)
        })
        //处理静态属性
        this.onlyTableDate.forEach(item=>{
          const newInfo={attr_id:item.attr_id,
          attr_value:item.attr_vals}
          this.addForm.attrs.push(newInfo)
        })
        form.attrs=this.addForm.attrs
        console.log(form)
        //发起请求的名称
        //商品的名称，必须时唯一的
        const {data:res}=await this.$http.post('goods',form)
          if(res.meta.status!==201){
            return this.$message.error('添加商品失败')
          }
          this.$message.success('添加商品成功')
          this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
};
</script>
<style lang="less">
.el-checkbox {
  margin: 0 8px 0 0 !important;
}
.previewImg{
    width: 100%;
}
.btnAdd{
  margin-top:15px ;
}
</style>